Since orb_exist doesn't work on the Snapdragon Linux side, we need to do
an additional orb_check after the orb_subscribe_multi, otherwise we copy
garbage.

The segfault was triggered by a count/length information about ESC
packets which lead to access outside the struct in the garbage case.

See required DriverFramework change:

   https://github.com/PX4/DriverFramework/pull/83



Signed-off-by: Mark Charlebois <charlebm@gmail.com>

The following cflags must be set for the eagle builds that compile the
generated IDL stubs:

	-Wno-missing-prototypes -Wno-missing-declarations

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

It's still used in sdlog2, but once we'll depricate/remove sdlog2, we will
not remove this parameter as well.

Instead we use o_name to get the topic name. Now the topic names are not
upper case anymore in the log format. This makes it more consistent, eg.
if used as a nested topic

this is needed for nested topics.

We explicitly include the timestamp. This makes it possible to change it's
type later on.
This breaks the current ULog logging format.

if override is enabled then it should apply even if RAW_PWM is being
supplied by the FMU

this is needed to prevent inadvertent camera trigger when setting up a
port

under NuttX the argc in task_main_trampoline contains two arguments,
but on linux only one.